Lab216 - Current Analysis

Lab216 - Current Analysis - Data& Analysis Part I...

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Samuel Dzifanu Lab 216: Kirchhoff’s Rules Current Analysis By Kirchhoff’s Rules Name : Samuel Dzifanu Objective: To predict and measure currents and voltages in electric circuit using Kirchhoff’s Junction Rule. Theory: Kirchhoff’s rules are designed to cater for all types of circuits; from the very simple to the most complex ones. The rules enable us to analyze circuits with any number of components (passive, active or both) and any number of voltage sources (DC, AC or both), connected together in any mode. The said rules are based on (i) the law of conservation of energy and (ii) the principle of linear superposition. According to Kirchhoff, every source in a multiple source circuit, supplies its own current and voltage to every component of that circuit. Equipment Used: Electronic connection board Resistors (100 Ω, 1 KΩ, 5.6 KΩ, 10 KΩ) DC Power Supply Wiring cable Ammeter Voltmeter
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Samuel Dzifanu Lab 216: Kirchhoff’s Rules Procedure: Follow the procedures as directed by your lab professor and your laboratory manual.
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Unformatted text preview: Data & Analysis: Part I: Resistor ( Ω) Voltage (V) Current (A) Rc 10,000 12 0.0012 Rb 5,600 5 0.89mA Current Calculated: Ia = Ib + Ic = 1.2mA + .89mA = 2.09mA Current Measured: Ia = 2.1 mA Error = .33% Part II: Ra = 5,600 Ω Rb = 10,000 Ω Rc = 5,600 Ω Measured Currents: I1 = 3.46 mA I2 = 1.21 mA I3 = 2.13 mA I4 = .725 mA I5 = .537 mA I6 = 2.65 mA Part III: Find Voltage at point A: Vtot = 12 V Samuel Dzifanu Lab 216: Kirchhoff’s Rules Rc = 5,600 Ω Ra = 10,000 Ω Req = Ra + Rc = 15,600 Ω I = V/Req = 12/15600 = .769mA Vc = I*Rc = .769mA * 5,600 Ω = 4.306 V Va = 12 – Vc = 7.7 V Measured Vc 4.296 Calculated Vc 4.306 % Error 0.21% Part IV: R = 6,800 Ω Ra = 5,600 Ω Rb = 5,600 Ω Right Loop (clockwise): 6,800(I) + 5600(Ia) = 5 Left Loop (counter-clockwise): 5600(Ib) +5,600(Ia) = 12 KCL: Ib + I = Ia Resistance ( Ω) Voltage (V) Current (mA) Rb 5600 5.684 1.015 Ra 5600 0.56 0.1 R 6800 6.244 1.115 Samuel Dzifanu Lab 216: Kirchhoff’s Rules...
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